How to stop CameraWindow from auto-opening?

It bugs me that every time I stick in my CF card, CameraWindow (CW) opens, asking me what to do. I was wondering if anybody knew, short of deleting the program, how to prevent this behaviour. I don't want to delete it yet in case I incorporate it into my workflow later.

I figure there must be some sort of resident Canon program that watches for the CF card insertion, then starts CW. But I can't see anything in Activity Monitor that looks like it might be the culprit. When I insert a CF card, Activity Monitor shows me that CW is starting, but that's all.